<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        .center{
            width: 1000px;
            height: 200px;
            border: 1px solid red;
            margin: 0 auto;
        }
    </style>
</head>
<body>
    <div class="center">
        <div></div>
        <div></div>
        <div></div>
        <div></div>
    </div>
    <form action="">
        <input type="text"/>
        <input type="password"/>
        <input type="button" value="注册"/>

        <input type="submit"/>
        <button>login</button>
        <input type="file"/>
        <input type="radio"  name="sex1"/> 男
        <input type="radio"  name="sex1"/> 女
        <input type="text" value="请输入"/>
        <input type="color"/>
        <input type="date"/>
        <input type="week"/>
        <input type="range">
        <select name="" id="">
            <option value="">请选择</option>
            <option value="">北京</option>
            <option value="">天津</option>
            <option value="">杭州</option>
        </select>
    </form>
</body>
</html>